sendbatch.java

比较实用的C++编程思想 有很多例子可以用

/*
 * This sample shows how to use the batching extensions.
 * In this example, we demonstrate the sue of the "sendBatch" API.
 * This allows the user to actually execute a set of batched
 * execute commands.
 *
 */

// You need to import the java.sql package to use JDBC
import java.sql.*;

// You need to import oracle.jdbc.driver.* in order to use the
// API extensions.
import oracle.jdbc.driver.*;

class SendBatch
{
  public static void main (String args [])
       throws SQLException
  {
    // Load the Oracle JDBC driver
    DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());

    // Connect to the database
    // You can put a database name after the @ sign in the connection URL.
    Connection conn =
      DriverManager.getConnection ("jdbc:oracle:oci8:@", "scott", "tiger");

    Statement stmt = conn.createStatement ();

    // Default batch value set to 50 for all prepared statements belonging
    // to this connection.
    ((OracleConnection)conn).setDefaultExecuteBatch (50);

    PreparedStatement ps =
      conn.prepareStatement ("insert into dept values (?, ?, ?)");
    
    ps.setInt (1, 32);
    ps.setString (2, "Oracle");
    ps.setString (3, "USA");

    // this execute does not actually happen at this point
    System.out.println (ps.executeUpdate ());     

    ps.setInt (1, 33);
    ps.setString (2, "Applications");
    ps.setString (3, "Indonesia");

    // this execute does not actually happen at this point
    int rows = ps.executeUpdate ();  
    
    System.out.println ("Number of rows updated before calling sendBatch: "
			+ rows);

    // Execution of both previously batched executes will happen
    // at this point. The number of rows updated will be
    // returned by sendBatch.
    rows = ((OraclePreparedStatement)ps).sendBatch ();

    System.out.println ("Number of rows updated by calling sendBatch: "
			+ rows);
  
    ps.close ();
    conn.close ();
  }
}